Magazine-fuse.



No. 761,908- PATENTED JUNE 7, 1904. H. E. PUTNEY, E. H. EGKERT & M. D. PUTNEY.

MAGAZINE FUSE. APPLICATION FILED D120. 5, 1902.

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No. 761,908. PATENTED JUNE 7-, 1904, H. E. PUTNBY, E. H. EGKERT & M. D. PUTNEY.

MAGAZINE FUSE. APPLICATION FILED DBO. a. 1902.

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1\l'0a 761,908. Patented June '7, 1904.

UNITED STATES PATENT OFFICE.

HERBERT E. PUTNEY, EDGAR H. EOKERT, ANDb HLTON D. PUTNEY, OF TOLEDO, OHIO.

MAGAZINE-FUSE.

SPECIFICATION forming part of Letters Patent No. 761,908, dated June 7, 1904.

Application filed December 5, 1902. Serial No. 133,991. (No model.)

TO "17mm it y ("m/087%! The sleeve is provided at each end with spiders Be it known that we, HERBERT E. PUTNEY, 7, preferably integral with the sleeve; but they O EDGAR H. EOKERT, and MILTON D. PUTNEY, may be separate and suitably mounted on the citizens of the United States, residing at Toarbor at each end of the sleeve.

5 ledo, in the county of Lucas and State of Ohio, Spiders 7 are provided with an equal numhave invented a new and useful Improvement ber of radial arms 8, and the arms of the spiders in l\lagazine-Fuses, of which the following is are so arranged that each arm of one spider a specification. radiates in the same radial plane with an arm Our invention relates to amagaZine-fuse for of the other spider. Centrally in the angles IO electric circuits, and has for its object to probetween the radial arms of the spiders are vide a device of the kind havinga plurality of formed integral therewith the webs 9 of less safety-fuses each insulated from the others radius and thickness than the arms, thereby 50 and adapted to be readily connected in circuit forming side recesses 10 concentrically around with a lead-conductor in succession as needed the hubs of the spiders between the radial I5 to replace a burned-out fuse and that may arms, with the free ends of the arms projectalso be used as a switch to make or break the ing beyond the webs 9. circuit. Upon each web 9 there is mounted a fuse- The objects of our invention are accomterminal 11, the body portion of which is biplished as hereinafter described, and illusfur cated to bestride the web, with the bifur- 2o trated in the drawings, in which cations extending radially toward the hub in Figure 1 is an isometric view of amagazinethe recesses 10, and each terminal is secured fuse constructed in accordance with our invenin such position by a bolt through the bifur- 7 tion. Fig. 2 is a transverse section through cations and the web. the same in a vertical plane. Fig. 3 is a side Each fuse-terminal 11 is provided with a 25 elevation of a bearing. Fig. 4 is a side elevawinding post 12, having a cross head 13 tion of amagazine-fuse arranged to operate asa formed as a cleat and preferably provided switch. Fig. 5is an illustration showing elecwith a central notch 14. The post may be trical means to rotate the magazine. Fig. 6 formed integral with the body portion of the is a plan view of a dial used in connection with terminal, but is preferably a detachable stud- 30 the mechanism illustrated in Fig. 4 to indiscrew threaded into a suitable orifice in the cate the fuse that is in circuit. Fig. 7 shows body of the terminal, the head of the screw a plurality offuses mounted upon a non-conbeing T-shaped to form a suitable winding- 30 ducting board, which is arranged to travel in cleat for the fuse. ways between two binding-posts of a lead set To opposite winding-posts 12 from spider 3 5 on opposite sides of the ways and successively to spider are secured the fuse-wires 15 by connect the fuses with the posts. placing their end portions in the notches 14:

A preferred embodiment of our invention is and then winding them around the cleats 13 5 shown in Fig. 1 of the drawings, in which 1 in a figure 8 loop and twisting them back on designates afuse-board of non-conducting and the body of the wire. By thus securing the 4 incombustible material, to which standards 2, fuse-wires to the winding-posts when the fuse having bearings 3, are suitably secured, and is burned out only that portion of the fuse in the bearings there is journaled an arbor 1, between the twisted end portions is destroyed, having an end portion 5 projecting a suitable whereby any welding of the wire to the posts, distance from an adjacent bearing 3. Between such as frequently occurs where binding-posts 4 5 the bearings the arbor is preferably formed are used and which practically unfits the posts angular to receive and rotate a sleeve 6, which for further use,is entirelyavoided and tholoose is mounted on the arbor, the sleeve being also ends of the fuse are prevented from swinging of non conducting and incombustiblematerial. into contact with other fuse-wires or their terminals and forming short circuits therewith. The arms 8 between the fuse-terminals prevent arcing between the terminals. Each fuse-terminal is also provided with an integral radial blade 16, located opposite to the supporting-slald for the fuse. Theblades are of a length to project beyond the radial arms 8 a suitable distance and are arranged to rotate edgewise. Upon the fuse-board near each spider are mounted binding-posts 17, to each of which an end of the severed lead 18 is secured, and each binding-post is provided with a pairof parallel contact-plates 19,which extend from the posts in position to receive between them the radial blades 16 and contact therewith successively as the sleeve is retated, and thereby as a pair of blades, one at each opposite end of the sleeve, are brought into contact with the plates of the bindingposts the fuse connecting such pair of blades is brought into circuit with the lead. \Vhen a fuse is burned out, by partially rotating the arbor by the means hereinafter described the burned-out fuse is switched out and the next succeeding fuse is switched into circuit with the lead, as occasion requires, until the magazine is exhausted. As one means to rotate the reel thus formed to successively connect the several fuses in circuit with the lead we have provided a ratchet-wheel 20, which is rigidly mounted upon the end at of the arbor 5. Ratchet-wheel 20 is provided with ratchetteeth 21 in number corresponding with the number of fuses mounted upon the sleeve. The ratchet-teeth are engaged in one direction by a spring-pressed pawl 22, pivota'lly attached to the operating lever-arm iii which is pivotally connected to the end 4: of the arbor, and to the free end of the lever-arm is coupled a rod 24, leading to a point from which the lever-arm may be actuated. WV hen the blades of opposite fuse-terminals are in position between the contact-plates of the binding-posts of the lead, the ratchet1 )awl is in engagement with one of the teeth of the ratchet-wheel, and by moving the lever, as indicated by the arrow, the sleeve may be intermittently rotated to a degree to switch a pair of fuse-terminal blades out of contact with the plates of the binding-posts 17 and bring in contact therewith the next succeeding pair of terminal blades.

The degree of rotation of the reel by one movement of the lever is limited in one direction by a stop 25, so mounted upon the rod 24L as to contact at the end of the predetermined length of movement with a guiding-shoulder E26, and the ratchet-pawl 22 is always held in operative engagement with one of the ratchet-teeth of the wheel by a stop 27, preferably integral with the bearing 2 and adapted to limit the movement of the lever-arm in the opposite direction.

The rotation of the reel reversely to that which is imparted by the lever-arm is prevented by a spring-pressed locking-dog 28, pivoted to the bearing and adapted to lock the ratchet-wheel against such movement.

To readily remove the arbor from the bear ings 2 for removing one reel and placing another thereon, the bearings 2 are made sectional. In Fig. 3 the top section 21) of the bearing is hinged at one side to the bottom section 30, and the free side of the top is suitably bolted to the bottom section. However, if desired, both sides of the top half of the hearing may be bolted to the bottom section.

To use our fuse-magazine as a switch or circuit-breaker, we have provided gearing (illustrated in Fig. t) in which a miter-gear 31 is mounted upon the end 4C of the arbor 2 and intermeshing with a gear 32, mounted upon the shaft 33, to the opposite end of which an operating-lever 23 i is provided with a springpressed dog 35, adapted to engage with teeth 36, which are arranged in the arc of the movement of the lever and may be integral with a plate 37 and by spacing the teeth upon the plate provide an index by means of which any pair of fuse-terminal blades may be rotated to come into or break contact with the plates of the binding-posts of the lead.

By proportioning the gear 32 to the arc of movement of the operating-lever the sleeve may be made to describe a comglete revolution within the extreme points of the movement of the lever, and by providing an initial blank section on the reel the circuit may be broken by rotating the reel to transfer the blank opposite to the bindingposts until one or more succeeding fuses are destroved, after which the terminals of the last-burnedout fuse may be used instead of the blank for such purpose. The ratchet-wheel 20 may be also electrically actuated by providing a solenoid 38, Fig. 5, and form upon the free end of the core 39 a spring-pawl 40, which is adapted to engage one of the teeth of the ratchet-wheel. By energizing the solenoid through a shunt-circuit from the lead a core is drawn into the body of the solenoid a suitable distance to rotate the fuse-spiders to a degree to remove from contact with the plates of the binding-posts a pair of fuse-terminal blades and bring into contact therewith the blades of another fuse,

Upon the core there is secured a suitable stop U, arranged to limit the outward movement of the same and engage the pawl with one of the teeth of the ratchet-wheel by contacting with a suitable shoulder 41. A spring 42, surrounding the core, may be interposed between the stop and the solenoid to insure the outward movement of the core, and a reverse movement of the wheel is prevented by the locking-dog 28.

In the modification shown in Fig. 7 we have mounted a plurality of fuse-terminals 11 upon a board 43, and each terminal of an opposite pair is insulated from succeeding pairs by a division-wall 44E. The fuse-board thus prepared is movable in ways 45 upon a back 46, to. which the binding-posts for the ends of the severed lead are secured in such position that the plates of a binding-post may contact with the blades of fuse-terminals on opposite sides of the movable board. The board may be moved by any suitable means to remove from or bring into contact successive fuse connections with the binding-post plates of a lead.

Our invention is one that may be advantageously used wherever safety-fuses are required for the protection of vulnerable connections of a lead; but it is especially adapted for use in connection with the leads of carinotors. In street ear systems, where the maintenance of time schedules is of great economical as well as public importance and where the burning out of a fuse frequently causes serious delays, which greatly interfere with such time schedule on account of the time required to replace it, such delays will be wholly avoided by the use of our magazine-fuse, whereby the circuit can be restored almost as quickly as it is broken by the burning out of a fuse, and by having the magazines made detachable and interchangeable when a magazine is exhausted it can be readily removed and replaced by another fully supplied with fuses, or as the magazines are provided with a greater number of fuses than are ordinarily required for a days service of the car an exhausted magazine can be refilled during the time the car is out of service, and thereby avoid any delay during service hours by having to refill an exhausted magazine or to substitute a loaded one therefor.

I/Vhat we claim to be new is 1. In a magazine-fuse the combination of an insulating-base, a pair of lead-terminals mounted oppositely on the base each having a pair of contact-plates projecting parallel therefrom, an insulating-body movably mounted on the base and adapted to move in either of opposite directions, a plurality of pairs of fuseterminals the terminals of each pair being mounted oppositely on the body, a switchblade integral with each fuse-terminal and projeeting therefrom in position to be moved by the body simultaneously with the blade of the opposite fuse-terminal between, and into and out of contact with a pair of lead-terminal plates, a T-shaped winding-post secured to each fuse-terminal, a fuse-wire connecting each pair of fuse-terminals by having its end portions wound taut around the end portions of the cross-bars of the winding-posts and then twisted back around the body of the wire, and means to move the fuse-bearing body to successively connect each fuse in circuit with the lead-terminals by forcing the blades of its terminals between and into contact with the contact-plates of the lead-terminals.

2. In a magazine-fuse, the combination of an insulating-base, a pair of brackets mounted 011 the base each provided with journal-bearings, an arbor journaled in the bearings, a pair of insulating-disks concentrically mounted on the arbor between the brackets, fuseterminal clips secured to thedisks at regular intervals around the peripheries of the disks, the clips of one disk being placed oppositely and at equal intervals to the clips of the other disk, switch-blades integral with each clip extending radial to the disks with the sides of the blades parallel with the sides of the disks, a T-shaped winding-post secured radially to each clip with the cross-bar parallel with the switch-blade, fuse-wires connecting opposite winding-posts by having their end portions wound taut around the end portions of the cross-bar on each side of the winding-post and then twisted around the body of the wire, a pair of lead-terminals mounted on the base one in the plane of each disk, a pair of spring contact-plates secured to each lead-terminal and projecting therefrom in parallel planes on opposite sides of and touching the planes of the disk-blades, and means to rotate the arbor and successively force the switch-blades of each fuse between the contact-plates of the lead-terminals.

3. The combination with a pair of fuse-terminals each having a T-shaped winding-post, of a fuse-wire having its end portions wound taut around the end portions of the cross-bar of the winding-post on each side of the post and twisted back on the body of the wire for a distance from each post with the central portion of the wire between the posts left uncovered by the twist.

In witness whereof we have hereunto set our hands this 7th day of November, A. D. 1902.

HERBERT E. PUTNEY.

EDGAR H. EOKERT.

MILTON D. PUTNEY. Witnesses:

WM. H. Moon, FRANK W. LONG. 

